How To Determine from Which Computer a User Logged On
This article was previously published under Q175062
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This article describes the methods available to identify from which systema user logged on. You may choose from one or more of the following methods:
- Windows NT Auditing
- Microsoft Network Monitor (or other network tracing utility)
- Using the Windows Internet Naming Service (WINS) database
- Using the NetBIOS Remote Name Cache table
Windows NT AuditingTo determine from which system a user logged on with Windows NT Auditing,perform the following steps:
- Start User Manager for Domains.
- Click Audit from the Policies menu.
- Click to enable Success for the Logon and Logoff category. Optionally, you may also select the Failure check box.
Date: 10/13/97 Event ID: 528 Time: 10:32:11 AM Source: Security User: JoeSmith Type: Success Audit Computer: MKTINGDOM Category: Logon/Logoff Description: Logon/Logoff: Successful Logon User Name: JoeSmith Domain: MKTINGDOM Logon ID: (0x0, 0x2D0D0) Logon Type: 3 Logon Process: User32 Authentication Pkg: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0 Workstation Name: \\WKS2
Network MonitorTo determine from which system a user logged on with Network Monitor,perform the following steps:
- Capture all incoming traffic to the domain controller(s). In order to reduce the size of the captured data:
- If possible, include only the Primary or Backup Domain Controller that is most likely to validate the intruder.
- Set a capture filter, including only the server message block (SMB) protocol.
- Configure a large enough memory buffer through the Buffer Settings option in the Capture menu.
- After the data has been captured, set a display filter to only include:
Property: Account Name
Src Mac Addr: Dst Mac Addr: DescriptionWKS1 SUNKING C session setup & X, Username = MariaH, and Ctree connect & X, Share = \\SUNKING\IPC$WKS2 SUNKING C session setup & X, Username = JoeSmith, and Ctree connect & X, Share = \\SUNKING\IPC$WKS3 SUNKING C session setup & X, Username = Administrator,and C tree connect & X, Share = \\SUNKING\IPC$
In the example above, WKS1 is the computer where the user is logging onfrom, SUNKING is the domain controller authenticating the request, and theDescription contains the Windows NT domain account being used.
NOTE: The Src Mac Addr may also been shown as a media access control or IPaddress if the NetBIOS name could not be resolved or the entry is not inthe Network Monitor address database.
Using the WINS DatabaseTo determine from which system a user logged on using the WINS database,perform the following steps:
- Start WINS Manager.
- Click Show Database on the Mappings menu.
- Click Set Filter, type the user account name in the Computer Name criteria, and then click OK.
- In the Mappings list, the entry with the user account name and the 03h identifier maps to the IP address of the workstation from which the user logged on to the domain.
Using the NetBIOS Remote Name TableTo determine from which system a user logged on using the NetBIOS RemoteName Table, perform the following steps:
- From an MS-DOS command prompt, type the following, and then press Enter.
net send <user name> "text message"
where <user name> is the user account for the user you are attempting to locate.
- Type the following, and then press Enter.
- As in the example above using the WINS Database, locate the user name that is associated with the 03h identifier and the corresponding IP address is that of the workstation.
TITLE : How to Activate Security Event Logging in Windows NT 4.0
TITLE : How to Identify User Who Changed Administrator Password
TITLE : Distinguishing Windows NT Audit Event Records
secevent sec audit
Article ID: 175062 - Last Review: 12/05/2015 08:07:13 - Revision: 1.1
Microsoft Windows NT Workstation 3.51, Microsoft Windows NT Workstation 4.0 Developer Edition, Microsoft Windows NT Server 3.51, Microsoft Windows NT Server 4.0 Standard Edition
- kbnosurvey kbarchive KB175062